So sánh
A=\(\frac{30^{31}+1}{30^{32}+1}\) và B=\(\frac{30^{32}+1}{30^{33}+1}\)
Chọn câu đúng:
A. \(\frac{31}{2}\)x \(\frac{32}{2}\)x\(\frac{33}{2}\)x.....x \(\frac{60}{2}\)= 1x2x3x...x60
B.\(\frac{31}{2}\)x \(\frac{32}{2}\)x\(\frac{33}{2}\)x....x \(\frac{60}{2}\)=1x3x5x7...x59
C.\(\frac{31}{2}\)x\(\frac{32}{2}\)x\(\frac{33}{2}\)x....x \(\frac{60}{2}\)=1x3x5x7...x60
D. \(\frac{31}{2}\)x\(\frac{32}{2}\)x\(\frac{33}{2}\)x....x \(\frac{60}{2}\)= 2x4x6x...x60
giúp mik vs mik đag cần gấp ngay bây h
So sánh
A=\(\frac{30^{31}+1}{30^{32}+1}\) và B=\(\frac{30^{32}+1}{30^{33}+1}\)
Help me!Mk đg cần rất gấp ai nhanh mk tick cho
Cho S=\(\frac{1}{31}\)+\(\frac{1}{32}\)+\(\frac{1}{32}\)+.....+\(\frac{1}{60}\)
So sánh S với \(\frac{4}{5}\)
CMR: \(\frac{31}{2}.\frac{32}{2}.\frac{33}{2}.....\frac{60}{2}=1.3.5.....59\)
Tìm x biết:
a) \(\frac{-3}{5}.y=\frac{21}{10}\)
b) \(y:\frac{3}{8}=-1\frac{31}{33}\)
c) \(1\frac{2}{5}.y+\frac{3}{7}=\frac{-4}{5}\)
d) \(\frac{-11}{12}.y+0,25=\frac{5}{6}\)
Tính giá trị biểu thức:
\(A=\left[\frac{1\frac{11}{31}.4\frac{3}{7}-\left(15-6\frac{1}{3}.\frac{2}{19}\right)}{4\frac{5}{6}+\frac{1}{6}\left(12-5\frac{1}{3}\right)}.\left(-1\frac{14}{93}\right)\right].\frac{31}{50}\)
CHO \(A=1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+\frac{1}{5}-\frac{1}{6}+...+\frac{1}{49}-\frac{1}{50}\)\(\frac{1}{50}\)
HÃY CHỨNG Ỏ RẰNG: \(\frac{7}{12}< A< \frac{5}{6}\)
HỘ MÌNH VỚI MÌNH CẦN GẮP:33
\(A=\frac{1}{1\cdot2}+\frac{1}{3\cdot4}+\frac{1}{5\cdot6}+\frac{1}{99\cdot100}.CM:\frac{7}{12}< A< \frac{5}{6}\)